The utility model relates to a straight centripetal mesh belt, including a spiral mesh strip and a pitch adjustment device. The spiral mesh strip is provided with several rows, and the rows of the spiral mesh strips are arranged in a staggered manner. A string strip is provided between two adjacent spiral mesh strips. U-shaped rings are inserted on both sides of the string strip and between two adjacent spiral mesh strips. The U-shaped rings are provided in a plurality, and the plurality of U-shaped rings are connected to the string strip. A fixing ring is provided on the outside of the string strip and on a side away from the U-shaped ring. A through hole is provided at the end of the string strip, and the pitch adjustment device is provided between two string strips. The utility model drives the entire threaded rod to rotate by rotating the rotating nut, so that the threads mesh with each other to re-stretch the string strip. When the string strip is bent after being used for a long time, the entire mesh belt is tensioned, which has a temporary and short tensioning effect on the mesh belt, and reduces the impact when the mesh belt is used.